/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.apache.skywalking.oap.server.core.worker;

import java.util.*;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * @author peng-yongsheng
 */
public class WorkerInstancesService implements IWorkerInstanceSetter, IWorkerInstanceGetter {

    private final AtomicInteger generator = new AtomicInteger(1);
    private final Map<Integer, AbstractWorker> instances;

    public WorkerInstancesService() {
        this.instances = new HashMap<>();
    }

    @Override public AbstractWorker get(int workerId) {
        return instances.get(workerId);
    }

    @Override public int put(AbstractWorker instance) {
        int workerId = generator.getAndIncrement();
        instances.put(workerId, instance);
        return workerId;
    }
}
